A 72-year-old man is being observed by your clinic for benign prostatic hyperplasia. His symptoms of a weak stream, straining, and post-void dribbling are worsening and he would like to begin medical treatment. You initiate tamsulosin and advise him of which of the following most likely side effect?

Tamsulosin is an alpha adrenergic blocker that is used in benign prostate hyperplasia to relax the muscles of the prostate and the urinary bladder inorder to increase urine flow.

Explanation:

Tamsulosin comes with a handful of side effects,the severe ones are;

- Low blood pressure; Tamsulosin reduces the blood pressure which can deprive the body of adequate oxygen to carry-out normal processes and might cause dizziness and risk of injury from falls.

- dizziness, lightheadedness, fainting and blurry vision; Machineries and active exercises are discouraged following Tamsulosin administration.

- Nausea and vomitting may occur so warm and small meals should be taken at intervals to reduce nausea and vomitting.

- decreased amount of semen during ejaculation may occur.

- Pain in the back, tooth may occur.